X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fnouveau%2Fnvkm%2Fcore%2Fengctx.c;fp=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fnouveau%2Fnvkm%2Fcore%2Fengctx.c;h=0000000000000000000000000000000000000000;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=fb2acbca75d969fed4599b3e53568f4d163cfb65;hpb=f93b97fd65072de626c074dbe099a1fff05ce060;p=kvmfornfv.git diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/core/engctx.c b/kernel/drivers/gpu/drm/nouveau/nvkm/core/engctx.c deleted file mode 100644 index fb2acbca7..000000000 --- a/kernel/drivers/gpu/drm/nouveau/nvkm/core/engctx.c +++ /dev/null @@ -1,239 +0,0 @@ -/* - * Copyright 2012 Red Hat Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * Authors: Ben Skeggs - */ -#include -#include -#include - -static inline int -nvkm_engctx_exists(struct nvkm_object *parent, - struct nvkm_engine *engine, void **pobject) -{ - struct nvkm_engctx *engctx; - struct nvkm_object *parctx; - - list_for_each_entry(engctx, &engine->contexts, head) { - parctx = nv_pclass(nv_object(engctx), NV_PARENT_CLASS); - if (parctx == parent) { - atomic_inc(&nv_object(engctx)->refcount); - *pobject = engctx; - return 1; - } - } - - return 0; -} - -int -nvkm_engctx_create_(struct nvkm_object *parent, struct nvkm_object *engobj, - struct nvkm_oclass *oclass, struct nvkm_object *pargpu, - u32 size, u32 align, u32 flags, int length, void **pobject) -{ - struct nvkm_client *client = nvkm_client(parent); - struct nvkm_engine *engine = nv_engine(engobj); - struct nvkm_object *engctx; - unsigned long save; - int ret; - - /* check if this engine already has a context for the parent object, - * and reference it instead of creating a new one - */ - spin_lock_irqsave(&engine->lock, save); - ret = nvkm_engctx_exists(parent, engine, pobject); - spin_unlock_irqrestore(&engine->lock, save); - if (ret) - return ret; - - /* create the new context, supports creating both raw objects and - * objects backed by instance memory - */ - if (size) { - ret = nvkm_gpuobj_create_(parent, engobj, oclass, - NV_ENGCTX_CLASS, pargpu, size, - align, flags, length, pobject); - } else { - ret = nvkm_object_create_(parent, engobj, oclass, - NV_ENGCTX_CLASS, length, pobject); - } - - engctx = *pobject; - if (ret) - return ret; - - /* must take the lock again and re-check a context doesn't already - * exist (in case of a race) - the lock had to be dropped before as - * it's not possible to allocate the object with it held. - */ - spin_lock_irqsave(&engine->lock, save); - ret = nvkm_engctx_exists(parent, engine, pobject); - if (ret) { - spin_unlock_irqrestore(&engine->lock, save); - nvkm_object_ref(NULL, &engctx); - return ret; - } - - if (client->vm) - atomic_inc(&client->vm->engref[nv_engidx(engine)]); - list_add(&nv_engctx(engctx)->head, &engine->contexts); - nv_engctx(engctx)->addr = ~0ULL; - spin_unlock_irqrestore(&engine->lock, save); - return 0; -} - -void -nvkm_engctx_destroy(struct nvkm_engctx *engctx) -{ - struct nvkm_engine *engine = engctx->gpuobj.object.engine; - struct nvkm_client *client = nvkm_client(engctx); - unsigned long save; - - nvkm_gpuobj_unmap(&engctx->vma); - spin_lock_irqsave(&engine->lock, save); - list_del(&engctx->head); - spin_unlock_irqrestore(&engine->lock, save); - - if (client->vm) - atomic_dec(&client->vm->engref[nv_engidx(engine)]); - - if (engctx->gpuobj.size) - nvkm_gpuobj_destroy(&engctx->gpuobj); - else - nvkm_object_destroy(&engctx->gpuobj.object); -} - -int -nvkm_engctx_init(struct nvkm_engctx *engctx) -{ - struct nvkm_object *object = nv_object(engctx); - struct nvkm_subdev *subdev = nv_subdev(object->engine); - struct nvkm_object *parent; - struct nvkm_subdev *pardev; - int ret; - - ret = nvkm_gpuobj_init(&engctx->gpuobj); - if (ret) - return ret; - - parent = nv_pclass(object->parent, NV_PARENT_CLASS); - pardev = nv_subdev(parent->engine); - if (nv_parent(parent)->context_attach) { - mutex_lock(&pardev->mutex); - ret = nv_parent(parent)->context_attach(parent, object); - mutex_unlock(&pardev->mutex); - } - - if (ret) { - nv_error(parent, "failed to attach %s context, %d\n", - subdev->name, ret); - return ret; - } - - nv_debug(parent, "attached %s context\n", subdev->name); - return 0; -} - -int -nvkm_engctx_fini(struct nvkm_engctx *engctx, bool suspend) -{ - struct nvkm_object *object = nv_object(engctx); - struct nvkm_subdev *subdev = nv_subdev(object->engine); - struct nvkm_object *parent; - struct nvkm_subdev *pardev; - int ret = 0; - - parent = nv_pclass(object->parent, NV_PARENT_CLASS); - pardev = nv_subdev(parent->engine); - if (nv_parent(parent)->context_detach) { - mutex_lock(&pardev->mutex); - ret = nv_parent(parent)->context_detach(parent, suspend, object); - mutex_unlock(&pardev->mutex); - } - - if (ret) { - nv_error(parent, "failed to detach %s context, %d\n", - subdev->name, ret); - return ret; - } - - nv_debug(parent, "detached %s context\n", subdev->name); - return nvkm_gpuobj_fini(&engctx->gpuobj, suspend); -} - -int -_nvkm_engctx_ctor(struct nvkm_object *parent, struct nvkm_object *engine, - struct nvkm_oclass *oclass, void *data, u32 size, - struct nvkm_object **pobject) -{ - struct nvkm_engctx *engctx; - int ret; - - ret = nvkm_engctx_create(parent, engine, oclass, NULL, 256, 256, - NVOBJ_FLAG_ZERO_ALLOC, &engctx); - *pobject = nv_object(engctx); - return ret; -} - -void -_nvkm_engctx_dtor(struct nvkm_object *object) -{ - nvkm_engctx_destroy(nv_engctx(object)); -} - -int -_nvkm_engctx_init(struct nvkm_object *object) -{ - return nvkm_engctx_init(nv_engctx(object)); -} - -int -_nvkm_engctx_fini(struct nvkm_object *object, bool suspend) -{ - return nvkm_engctx_fini(nv_engctx(object), suspend); -} - -struct nvkm_object * -nvkm_engctx_get(struct nvkm_engine *engine, u64 addr) -{ - struct nvkm_engctx *engctx; - unsigned long flags; - - spin_lock_irqsave(&engine->lock, flags); - list_for_each_entry(engctx, &engine->contexts, head) { - if (engctx->addr == addr) { - engctx->save = flags; - return nv_object(engctx); - } - } - spin_unlock_irqrestore(&engine->lock, flags); - return NULL; -} - -void -nvkm_engctx_put(struct nvkm_object *object) -{ - if (object) { - struct nvkm_engine *engine = nv_engine(object->engine); - struct nvkm_engctx *engctx = nv_engctx(object); - spin_unlock_irqrestore(&engine->lock, engctx->save); - } -}